CN216115589U

CN216115589U - Multi-medium flow dividing and collecting structure and flat tube heat exchanger

Info

Publication number: CN216115589U
Application number: CN202121768281.7U
Authority: CN
Inventors: 李先庭; 李社红; 姜思航; 石文星; 王宝龙; 罗敏; 孔建军
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2021-07-31
Filing date: 2021-07-31
Publication date: 2022-03-22
Anticipated expiration: 2031-07-31

Abstract

The utility model discloses a multi-medium flow dividing and collecting structure which comprises a first flow dividing pipe, a second fluid chamber and a main plate, wherein the first flow dividing pipe is connected with the first fluid chamber; the first branch pipe is arranged in a closed cavity structure formed by combining the second fluid chamber and the main board and keeps a distance from the main board in parallel, the first flat pipe jacks and the first flat pipe via holes are coaxially corresponding in position and equal in quantity, and all parts are suitable for batch processing of processes such as stamping and the like; the flat tube heat exchanger with the structure can finish high-efficiency heat exchange among various media, and is simple and reliable; the flat tube heat exchanger is welded and assembled in two steps in the machining process, uniform control of the temperature of a welding line in the brazing process is guaranteed, leakage detection is facilitated, the process is simple, the yield is high, and the cost is low.

Description

Multi-medium flow dividing and collecting structure and flat tube heat exchanger

Technical Field

The utility model belongs to the field of heat exchange, and particularly relates to a multi-medium diversity flow structure and a flat tube heat exchanger.

Background

The multi-medium flat tube heat exchanger has important application value in the fields of automobile heat management, computer equipment heat dissipation, building air-conditioning heat pumps, chemical engineering, medical treatment and the like; in the multi-medium heat exchanger in the prior art, for example, a method of arranging a partition plate in a collecting pipe is adopted in chinese patent CN103837025B, so that the diversity flow of two groups of parallel flow flat tubes is realized, because the collecting pipe and the built-in partition plate are of an integral structure, and meanwhile, when the furnace is passed for welding, the brazing temperature at the flat tube welding seam of the built-in partition plate is difficult to control, the streaming phenomenon is serious, and the yield is extremely low; the Chinese patent CN204666000U adopts a double-collecting pipe structure, although the requirement of brazing temperature control can be met to a certain extent, the welding seam is multiplied, the yield is still very low, the collecting pipe with holes on two sides is difficult to realize stamping processing, the requirement of the heat exchanger assembly process is high, and the difficulty of mass production is large; chinese patent CN204666001U adopts a method of bending flat tube ends to realize the diversity flow of two groups of parallel flow flat tubes and improve the good product rate of brazing, but because the bending processing difficulty of the flat tubes is increased, the heat exchanger formed after bending has large thickness, serious air leakage, greatly reduced effective heat exchange area and low heat exchange energy efficiency; simple and reliable design of the diversity current structures is a key technology needed in the art.

Disclosure of Invention

The utility model aims to disclose a multi-medium current dividing and collecting structure, which improves the design of the existing multi-medium current dividing and collecting structure, meets the production requirements of stamping and brazing and simply realizes the current dividing and collecting of various media.

The utility model also aims to disclose a flat tube heat exchanger which is implemented in one heat exchanger at low cost and can finish high-efficiency heat exchange among various media.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model discloses a multi-medium flow dividing and collecting structure which comprises a first flow dividing pipe, a second fluid chamber and a main plate, wherein the first flow dividing pipe is connected with the first fluid chamber; the main board is provided with a plurality of first flat pipe through holes which are arranged in parallel, and the first branch pipes are provided with first flat pipe jacks which are coaxially corresponding to the first flat pipe through holes in position and are equal in number; the second fluid chamber and the main plate are combined to form a closed cavity structure for the second fluid flow distribution and collection, and the first branch pipe is positioned in the closed cavity structure and is parallel to the main plate at a distance.

The third fluid chamber is positioned on the other side of the main board and is parallel and opposite to the first branch pipe, the third fluid chamber is provided with first flat pipe through holes and second flat pipe plug holes which are alternately arranged, the first flat pipe through holes and the first flat pipe through holes are coaxially corresponding in position and equal in quantity, and the third fluid chamber and the main board are combined to form a closed cavity structure for the third fluid branch flow.

Further, follow mainboard length direction, the mainboard still is equipped with the flat tub of jack of second with first flat tub of via hole alternate arrangement.

Furthermore, the distance between each first flat tube via hole and one adjacent second flat tube jack is zero, and a plurality of double flat tube jack groups are formed on the main board; or every first flat pipe via hole and adjacent two the second flat pipe jack interval is zero form a many flat pipe superposed hole on the mainboard.

The main board is also provided with third flat pipe through holes which are the same in thickness and number as the first flat pipe through holes, and each first flat pipe through hole and one third flat pipe through hole are arranged in parallel along the width direction of the flat pipe hole; the third branch pipe is provided with third flat pipe jacks which are coaxially corresponding to the third flat pipe via holes and equal in number, is positioned in a closed structure formed by combining the second fluid chamber and the main board and used for separately collecting the second fluid, and keeps a distance from the main board in a parallel manner.

The utility model also discloses a flat tube heat exchanger, which comprises a current divider and a first flat tube, wherein the current divider is the multi-medium current dividing and collecting structure in the claim 1; the first flat pipe comprises a first flow channel group and a second flow channel group, wherein the first flow channel group and the second flow channel group are arranged at intervals, the flow channel openings of the first flow channel group and the flow channel openings of the second flow channel group are arranged on the heat exchange surface at the end part of the first flat pipe, and the flow channel openings of the second flow channel group are positioned at the inner side of the flow channel openings of the first flow channel group; the end part of the first flat pipe penetrates through the first flat pipe through hole and the first flat pipe jack and is inserted into the inner cavity of the first branch pipe, the flow passage opening of the first flow passage group is positioned in the inner cavity of the first branch pipe, and the first flow passage group is communicated with the first branch pipe to form a first heat exchange channel; and the second flow channel group is communicated with the closed cavity for the second fluid flow distribution and collection to form a second heat exchange channel.

The utility model also discloses another flat tube heat exchanger which comprises a diversity current device, a first flat tube and a second flat tube, wherein the diversity current device is the 2 nd multi-medium diversity current structure; the first flat pipe comprises a first flow channel group and a second flow channel group, wherein the first flow channel group and the second flow channel group are arranged at intervals, the flow channel openings of the first flow channel group and the flow channel openings of the second flow channel group are arranged on the heat exchange surface at the end part of the first flat pipe, and the flow channel openings of the second flow channel group are positioned at the inner side of the flow channel openings of the first flow channel group; the end part of the first flat pipe penetrates through the first flat pipe through hole, the first flat pipe through hole and the first flat pipe insertion hole to be inserted into the inner cavity of the first branch pipe, the runner port of the first runner group is positioned in the inner cavity of the first branch pipe, and the first runner group of the first flat pipe is communicated with the first branch pipe to form a first heat exchange channel; the second flow channel group flow channel opening is positioned in the space between the first branch flow channel and the main plate, and the second flow channel group is communicated with the closed cavity for the second fluid branch flow to form a second heat exchange channel; the end part of the second flat pipe penetrates through a second flat pipe plug hole, a second flat pipe runner port is positioned in an inner cavity of the third fluid chamber, and a runner of the second flat pipe is communicated with a closed cavity for separately collecting the third fluid to form a third heat exchange channel.

The utility model also discloses another flat tube heat exchanger which comprises a diversity current device, a first flat tube and a second flat tube, wherein the diversity current device is the second 3 rd or 4 th multi-medium diversity current structure, and the end surfaces of the two ends of the first flat tube and the second flat tube are provided with a runner port; the end part of the first flat pipe penetrates through the first flat pipe through hole and the first flat pipe insertion hole and is inserted into the inner cavity of the first branch pipe, and a flow channel of the first flat pipe is communicated with the first branch pipe to form a first heat exchange channel; the end part of the second flat pipe is inserted into the second flat pipe jack, a runner port on the end surface of the second flat pipe is positioned in the space between the first branch pipe and the main board, and a runner of the second flat pipe is communicated with the second fluid chamber through the space to form a second heat exchange channel.

The utility model also discloses another flat tube heat exchanger which comprises a diversity current collector, a first flat tube, a second flat tube and a third flat tube, wherein the diversity current collector is the 5 th multi-medium diversity current structure, and the end surfaces of the two ends of the first flat tube, the second flat tube and the third flat tube are provided with runner ports; the end part of the first flat pipe penetrates through the first flat pipe through hole and the first flat pipe insertion hole and is inserted into the inner cavity of the first branch pipe, and a flow channel of the first flat pipe is communicated with the first branch pipe to form a first heat exchange channel; the end part of a second flat pipe is inserted into the second flat pipe jack, a runner port on the end surface of the second flat pipe is positioned in the space between the first branch pipe and the main board, and a runner of the second flat pipe is communicated with the closed cavity for separately collecting the second fluid to form a second heat exchange channel; and the end part of the third flat pipe penetrates through the third flat pipe via hole and the third flat pipe jack and is inserted into the inner cavity of the third branch pipe, and a flow channel of the third flat pipe is communicated with the third branch pipe to form a third heat exchange channel.

Based on the technical scheme, the multi-medium diversity structure is characterized in that the first branch pipe is arranged in a closed cavity structure formed by combining the second fluid chamber and the main board, the first branch pipe and the main board keep a distance in parallel, the first flat pipe jacks of the first branch pipe are coaxially corresponding to the first flat pipe via holes of the main board, and the first branch pipe, the second fluid chamber and the main board are independent, so that the three parts of the first branch pipe, the second fluid chamber and the main board can be conveniently processed and formed by adopting processes of stamping, injection molding or aluminum casting, the consistency is good, and the integrated integration of multi-medium diversity functions is simply realized.

The flat tube heat exchanger adopts the multi-medium flow dividing and collecting structure, high-efficiency heat exchange among various media is completed in one heat exchanger, and the flat tube heat exchanger is reliable in sealing and low in cost.

Drawings

FIG. 1 is a schematic view of an embodiment 1 of a multi-media distribution and collection flow structure disclosed in the present invention;

FIG. 2 is a schematic view of an embodiment 2 of a multi-media distribution and collection flow structure disclosed in the present invention;

FIG. 3 is a schematic view of an embodiment 3 of a multi-media distribution and collection structure disclosed in the present invention;

FIG. 4 is a schematic view of an embodiment 4 of a multi-media distribution and collection flow structure disclosed in the present invention;

fig. 5 is a schematic view of an embodiment 5 of a multi-media distribution and collection structure disclosed in the present invention;

fig. 6 is a schematic structural view of a main body of an embodiment 6 of the flat tube heat exchanger disclosed by the utility model;

fig. 7 is one of the internal structure diagrams of a part a of an embodiment 6 of the flat tube heat exchanger disclosed in the present invention;

fig. 8 is a second internal structure diagram of a part a of an embodiment 6 of the flat tube heat exchanger disclosed in the present invention;

fig. 9 is a schematic sectional structure view of an embodiment 6 of the flat tube heat exchanger disclosed in the present invention;

fig. 10 is a schematic sectional structure view of an embodiment 7 of the flat tube heat exchanger disclosed in the present invention;

fig. 11 is a schematic structural view of a main body of an embodiment 8 of the flat tube heat exchanger disclosed by the utility model;

fig. 12 is an exploded schematic view of an embodiment 8 of the flat tube heat exchanger disclosed in the present invention;

fig. 13 is a partial B structural view of an embodiment 8 of a flat tube heat exchanger disclosed in the present invention;

fig. 14 is a partial structure view of an embodiment 8 of the flat tube heat exchanger disclosed in the present invention;

fig. 15 is a partial structure view of an embodiment 9 of a flat tube heat exchanger disclosed in the present invention.

In the drawings: 1. A first header; 10. a first fluid interface; 11. A first flat tube jack; 2. a second fluid chamber; 20. a second fluid interface; 3. A main board; 31. a first flat tube via hole; 32. a second flat tube jack; 33. the third flat pipe is inserted into the hole; 4. a fin; 5. A first flat tube; 51. a first flow passage group runner port; 52. A second flow passage group runner port; 6. A second flat tube; 60. a second flat pipe runner port; 7. A third fluid chamber; 70. a third interface; 71. the first flat pipe penetrates through the jack; 72. a second flat tube plug hole; 8. a third header pipe; 80. a third fluid interface; 81. A third flat tube jack; 9. and a third flat tube.

Detailed Description

The technical scheme of the embodiment is further described by combining the attached drawings of the embodiment of the utility model:

the embodiment 1 of the multi-medium distribution and collection flow structure provided by the utility model is as shown in the attached drawing 1: comprises a first branched pipe 1, a second fluid chamber 2 and a main plate 3; the main board 3 is provided with a plurality of first flat tube through holes 31 which are arranged in parallel, and the first branch tubes 1 are provided with first flat tube jacks 11 which are coaxially corresponding to the first flat tube through holes 31 in position and are equal in number; the second fluid chamber 2 and the main plate 3 are combined to form a closed cavity structure for distributing and collecting the second fluid, and the first branch pipe 1 is positioned in the closed cavity structure and is parallel to the main plate 3 to keep a distance; the first manifold 1 has a first fluid connection 10 which emerges from the side wall of the second fluid chamber 2, and the end of the second fluid chamber 2 has a second fluid connection 20.

In embodiment 1, the multi-medium flow dividing and collecting structure formed by combining the second fluid chamber, the first branch pipe, and the main plate has two fluid channels: the first fluid interface 10 is connected to the diversity flow of the plurality of first flat tube jacks 11 through the inner cavity of the first branch pipe 1, and the second fluid interface 20 is connected to the diversity flow in the distance between the first branch pipe 1 and the main plate 3 through the second fluid chamber 2.

The embodiment 2 of the multi-medium distribution and collection flow structure provided by the utility model is as shown in the attached figure 2: comprises a first branched pipe 1, a second fluid chamber 2, a main plate 3 and a third fluid chamber 7; the main board 3 is provided with a plurality of first flat tube through holes 31 which are arranged in parallel, and the first branch tubes 1 are provided with first flat tube jacks 11 which are coaxially corresponding to the first flat tube through holes 31 in position and are equal in number; the second fluid chamber 2 and the main plate 3 can form a closed cavity structure for the second fluid distribution and collection flow after being combined, and the first branch pipe 1 is positioned in the closed cavity structure and keeps a distance from the main plate 3 in parallel; the third fluid chamber 7 is positioned on the other side of the main board 3 and is opposite to the first branch pipe 1 in parallel, the third fluid chamber 7 is provided with a first flat pipe penetrating hole 71 and a second flat pipe inserting hole 72 which are alternately arranged, the first flat pipe penetrating hole 71 and the first flat pipe passing hole 31 are coaxially corresponding in position and equal in number, and the third fluid chamber 7 and the main board 3 can form a closed cavity structure for the third fluid branch flow after being combined; the first manifold 1 has a first fluid connection 10 which emerges from a side wall of the second fluid chamber 2, the end of the second fluid chamber 2 having a second fluid connection 20, and the end of the third fluid chamber 7 having a third connection 70.

In the present embodiment 2, the second fluid chamber 2, the first branch header 1, the main plate 3, and the third fluid chamber 7 are combined to form a multi-medium flow-dividing structure, and each of the three fluid channels is: the first fluid connection 10 distributes the flow to the plurality of first flat tube insertion holes 11 through the inner cavity of the first branch tube 1, the second fluid connection 20 distributes the flow to the space between the first branch tube 1 and the main plate 3 through the inner cavity of the second fluid chamber 2, and the third connection 70 distributes the flow to the plurality of second flat tube insertion holes 72 through the inner cavity of the third fluid chamber 7.

The embodiment 3 of the multi-medium distribution and collection flow structure provided by the utility model is as shown in the attached figure 3: comprises a first branched pipe 1, a second fluid chamber 2 and a main plate 3; the main board 3 is provided with a plurality of first flat tube through holes 31 and second flat tube jacks 32 which are alternately arranged in parallel, and the first branch tube 1 is provided with first flat tube jacks 11 which are coaxially corresponding to the first flat tube through holes 31 in position and are equal in number; the second fluid chamber 2 and the main plate 3 can form a closed cavity structure for the second fluid distribution and collection flow after being combined, and the first branch pipe 1 is positioned in the closed cavity structure and keeps a distance from the main plate 3 in parallel; the first manifold 1 has a first fluid connection 10 which emerges from the side wall of the second fluid chamber 2, and the end of the second fluid chamber 2 has a second fluid connection 20.

In this embodiment 3, the second fluid chamber 2, the first branch pipe 1, and the main plate 3 are combined to form a multi-media flow dividing and collecting structure, and each of the two fluid passages is: the first fluid connection 10 distributes the flow to the plurality of first flat tube sockets 11 via the inner cavity of the first manifold 1, and the second fluid connection 20 distributes the flow to the plurality of second flat tube sockets 32 via the inner cavity of the second fluid chamber 2.

As shown in fig. 4, the embodiment 4 of the multi-medium distribution and collection flow structure provided by the present invention is basically the same as the embodiment 3, and the difference is that: every first flat pipe via hole 31 in this embodiment 4 is zero with two adjacent flat pipe jack 32 intervals of second, forms a many flat pipe superposed hole on mainboard 3.

As shown in fig. 5, the embodiment 5 of the multi-medium distribution and collection flow structure provided by the present invention is basically the same as the embodiment 3, and the difference is that: in this embodiment 5, the main board 3 further includes a third branch pipe 8, third flat pipe via holes 33 having the same thickness and the same number as the first flat pipe via holes 31 are further provided, and each first flat pipe via hole 31 and one third flat pipe via hole 33 are parallel to each other in the flat pipe width direction; the third branch pipe 8 is provided with third flat pipe insertion holes 81 which are coaxially corresponding to the third flat pipe through holes 33 in position and equal in number, the third branch pipe 8 is located in a closed structure formed by combining the second fluid chamber 2 and the main plate 3 and keeps a distance from the main plate 3 in a parallel manner, and a third fluid interface 80 of the third branch pipe 8 penetrates out of the side wall of the second fluid chamber 2.

In example 5, the second fluid chamber 2, the first branch header 1, the third branch header 8, and the main plate 3 are combined to form a multi-medium flow dividing and collecting structure, and each of the three fluid chambers includes: the first fluid connection 10 distributes flow to the plurality of first flat tube insertion holes 11 via the inner cavity of the first manifold 1, the second fluid connection 20 distributes flow to the plurality of second flat tube insertion holes 32 via the inner cavity of the second fluid chamber 2, and the third fluid connection 80 distributes flow to the plurality of third flat tube insertion holes 81 via the inner cavity of the third manifold 8.

In the process of welding and assembling the multi-media current divider, the gap in any one of

embodiments

1, 2, 3, 4 and 5 of the utility model is convenient for leakage point inspection and takes the design of the flow resistance of the fluid flowing through the gap into consideration, and generally the gap is designed according to the size not less than 1 MM.

The embodiment 6 of the flat tube heat exchanger provided by the utility model is as shown in the accompanying drawings 1, 6, 7, 8 and 9: the multi-medium distribution and collection structure comprises a left diversity current collector, a right diversity current collector and a multilayer first flat pipe 5, wherein the left diversity current collector and the right diversity current collector are the multi-medium distribution and collection structure in the previous embodiment 1 of the multi-medium distribution and collection structure; the first flat pipe 5 comprises a first flow channel group and a second flow channel group, wherein the flow channels are arranged at intervals, the flow channel opening 51 of the first flow channel group and the flow channel opening 52 of the second flow channel group are arranged on the heat exchange surface at the end part of the first flat pipe 5, and the flow channel opening 52 of the second flow channel group is positioned at the inner side of the flow channel opening 51 of the first flow channel group; the two end parts of the first flat pipe 5 penetrate through the first flat pipe via hole 31 and the first flat pipe jack 11 and are respectively inserted into the inner cavities of the left and right diversity current collectors first branch pipes 1, the first flow channel group flow channel port 51 is positioned in the inner cavity of the first branch pipe 1, and the first flow channel group of the first flat pipe 5 is communicated with the first branch pipes 1 of the left and right diversity current collectors to form a first heat exchange channel; the second flow channel group flow channel port 52 is located in the space between the first branch flow channel 1 and the main plate 3, and the second flow channel group of the first flat tube 5 is communicated with the second fluid chambers 2 of the left and right branch flow collectors through the space to form a second heat exchange channel.

In this embodiment 6, first heat transfer passageway and second heat transfer passageway still can pass through the outer heat transfer surface heat transfer of first flat pipe 5 with the outside medium of first flat pipe 5 respectively when first flat pipe 5 is inside through runner dividing wall heat transfer, and this embodiment 6 utilizes the single flat pipe that the runner mouth established on the heat transfer surface to constitute three medium heat exchanger structures.

In this embodiment 6, still be equipped with fin 4 between the first flat pipe 5 of multilayer, further strengthened the heat exchange efficiency of two heat transfer passageways in the first flat pipe 5 and the 5 external medium of first flat pipe.

The embodiment 7 of the flat tube heat exchanger provided by the utility model is as shown in the accompanying drawings 2 and 10: the multi-medium diversity current structure comprises a left diversity current device, a right diversity current device and a multilayer first flat tube 5, wherein the left diversity current device and the right diversity current device are the multi-medium diversity current structure in the previous multi-medium diversity current structure embodiment 2; this embodiment 7 is a function expansion structure of the foregoing embodiment 6, and is different therefrom in that: in this embodiment 7, a plurality of layers of second flat tubes 6 are additionally provided, two end portions of each second flat tube 6 penetrate through second flat tube insertion holes 72 of a left diversity current collector third fluid chamber 7 and a right diversity current collector third fluid chamber 7, a second flat tube runner port 60 is located in an inner cavity of the third fluid chamber 7, and a runner of each second flat tube 6 is communicated with the left diversity current collector third fluid chamber 7 and the right diversity current collector third fluid chamber 7 to form a third heat exchange channel.

In this embodiment 7, first flat pipe 5 and the flat 6 alternate arrangement of second, first heat transfer passageway and second heat transfer passageway still can pass through the outer heat transfer surface heat transfer of first flat pipe 5 with the outside medium of first flat pipe 5 respectively when first flat pipe 5 is inside through runner next door heat transfer, and flat 6 heat transfer surfaces and outside medium heat transfer are passed through to the flat pipe of second, and this embodiment 7 utilizes two flat pipes to constitute four medium heat exchanger structures.

A preferred structure of this embodiment 7 is: a heat transfer surface of first flat pipe 5 directly laminates with 6 heat transfer surfaces of adjacent flat pipe of second, sets up the fin between another heat transfer surface of first

flat pipe

5 and 6 heat transfer surfaces of adjacent flat pipe of second, and this usable pair of flat pipe of preferred structure is in groups the mode, constitutes four medium heat exchanger structures of higher efficiency. Another preferred structure of this embodiment 7 is: two heat transfer surfaces of first flat pipe 5 directly laminate with 6 heat transfer surfaces of adjacent flat pipe of second respectively, and the usable flat pipe laminating mode of many flat pipes of this preferred structure constitutes the class board three medium heat exchanger structure that bearing capacity is high, heat transfer intensity is big, low cost.

An embodiment 8 of the flat tube heat exchanger provided by the utility model is as shown in fig. 3, 4, 11, 12, 13, and 14: the multi-medium diversity current collector comprises a left diversity current collector, a right diversity current collector, a multilayer first flat tube 5 and a multilayer second flat tube 6, wherein the diversity current collector is the multi-medium diversity current collector structure in the previous embodiment 3 of the multi-medium diversity current collecting structure; the end surfaces of the two ends of the first flat pipe 5 and the second flat pipe 6 are provided with runner ports; the end part of the first flat pipe 5 penetrates through the first flat pipe through hole 31 and the first flat pipe jack 11 and is inserted into the inner cavity of the first branch pipe 1, and a flow channel of the first flat pipe 5 is communicated with the first branch pipes 1 of the left and right diversity current collectors to form a first heat exchange channel; the end part of the second flat pipe 6 is inserted into the second flat pipe insertion hole 32, a runner port on the end surface of the second flat pipe 6 is positioned in the space between the first branch pipe 1 and the main board 3, and a runner of the second flat pipe 6 is communicated with the second fluid chambers 2 of the left and right branch collectors through the space to form a second heat exchange channel.

In this embodiment 8, first flat pipe 5 and the flat 6 alternate arrangement of second, pass through heat transfer surface next door heat transfer with external medium respectively, and this embodiment 8 utilizes the double flat pipe to constitute simple three medium heat exchanger structure.

A preferred structure of this embodiment 8 is: a heat transfer surface of first flat pipe 5 directly laminates with the flat 6 heat transfer surfaces of adjacent second, sets up the fin between another heat transfer surface of first flat pipe 5 and the flat 6 heat transfer surfaces of adjacent another second, and the usable pair of flat pipe of this preferred structure is organized the mode, constitutes three medium heat exchanger structures of higher efficiency.

Another preferred structure of this embodiment 8 is: two heat transfer surfaces of first flat pipe 5 directly laminate with 6 heat transfer surfaces of adjacent flat pipe of second respectively, and the usable flat pipe laminating mode of many flat pipes of this preferred structure constitutes two medium heat exchanger structures of class plate that bearing capacity is high, heat transfer intensity is big, low cost.

The embodiment 9 of the flat tube heat exchanger provided by the utility model is as shown in the accompanying drawings 5 and 15: including controlling two diversity current collectors, multilayer first flat pipe 5, multilayer second flat pipe 6, this embodiment 9 is the function extension type structure of aforementioned embodiment 8, and its difference lies in: the current divider is the multi-medium current dividing and collecting structure described in the previous embodiment 5 of the multi-medium current dividing and collecting structure, and this embodiment 9 further includes a multilayer third flat tube 9; the end surfaces of the two ends of the third flat pipe 9 are provided with runner ports; the two ends of the third flat pipe 9 respectively penetrate through the third flat pipe via holes 33 of the left and right diversity current collector main boards 3 and the third flat pipe jacks 81 of the left and right diversity current collector third branch pipes 8, and are inserted into the inner cavities of the third branch pipes 8, and the flow channel of the third flat pipe 9 is communicated with the third branch pipes 8 of the left and right diversity current collectors to form a third heat exchange channel.

In this embodiment 9, first flat pipe 5, the flat pipe 9 of third are abreast along flat pipe width direction, and first flat pipe 5, the flat pipe 9 of third are synchronous and the flat pipe 6 alternating arrangement of second, and first flat pipe 5, the flat pipe 6 of second, the flat pipe 9 of third pass through self heat transfer surface next door heat transfer with external medium respectively, and this embodiment 9 utilizes the flat pipe of three to constitute simple four medium heat exchanger structure.

A preferred structure of this embodiment 9 is: a heat transfer surface of first flat pipe 5, the flat pipe 9 of third is directly laminated with the flat 6 heat transfer surfaces of the common adjacent second respectively, sets up the fin between another heat transfer surface of the flat pipe 9 of first flat pipe 5, third and the flat 6 heat transfer surfaces of adjacent second, and the usable flat nest of tubes mode of three of this preferred structure constitutes four medium heat exchanger structures of higher efficiency.

Another preferred structure of this embodiment 9 is: two heat transfer surfaces of the first flat pipe 5 and the third flat pipe 9 are directly attached to the heat transfer surfaces of the two adjacent second flat pipes 6 respectively, and the preferred structure can utilize a multi-flat-pipe attaching mode to form a plate-like three-medium heat exchanger structure with high bearing capacity, high heat transfer strength and low cost.

The welding assembly of the flat tube heat exchanger at any one of the utility model at least comprises two steps: s1, welding and sealing the first branch pipe, the first flat pipe and the main board by a furnace welding process for one time; and S2, sealing the second fluid chamber and the main board by adopting a secondary welding or crimping process.

According to the multi-medium diversity current structure, the main parts are suitable for batch processing of technologies such as stamping and the like; the flat tube heat exchanger with the structure can finish high-efficiency heat exchange among various media, and is simple and reliable; the flat tube heat exchanger is welded and assembled in two steps in the machining process, uniform control of the temperature of a welding line in the brazing process is guaranteed, leakage detection is facilitated, the process is simple, the yield is high, and the cost is low.

Claims

1. A multimedia distribution and collection structure, characterized by comprising a first distribution pipe (1), a second fluid chamber (2), a main plate (3); the main board (3) is provided with a plurality of first flat pipe through holes (31) which are arranged in parallel, and the first branch pipe (1) is provided with first flat pipe jacks (11) which are coaxially corresponding to the first flat pipe through holes (31) in position and are equal in number; the second fluid chamber (2) and the main plate (3) are combined to form a closed cavity structure for distributing and collecting the second fluid, and the first branch pipe (1) is positioned in the closed cavity structure and keeps a distance from the main plate (3) in parallel.

2. The multimedia distribution manifold structure of claim 1, wherein: the three-way valve is characterized by further comprising a third fluid chamber (7), wherein the third fluid chamber (7) is located on the other side of the main board (3) and is parallel and opposite to the first branch pipe (1), the third fluid chamber (7) is provided with first flat pipe through holes (71) and second flat pipe plug holes (72) which are arranged in an alternating mode, the first flat pipe through holes (71) and the first flat pipe through holes (31) are coaxially corresponding in position and equal in number, and the third fluid chamber (7) and the main board (3) are combined to form a closed cavity structure for the third fluid flow distribution and collection.

3. The multimedia distribution manifold structure of claim 1, wherein: follow mainboard (3) length direction, mainboard (3) still are equipped with second flat pipe jack (32) with first flat pipe via hole (31) alternate arrangement.

4. The multimedia diversity stream architecture of claim 3, wherein: the distance between each first flat tube via hole (31) and one adjacent second flat tube jack (32) is zero, and a plurality of double flat tube jack groups are formed on the main board (3); or each first flat pipe via hole (31) and two adjacent second flat pipe jacks (32) are both zero in distance, and a multi-flat pipe superposed hole is formed in the main board (3).

5. The multimedia diversity stream structure of claim 3 or 4, wherein: the main board (3) is also provided with third flat pipe through holes (33) which are the same in thickness and number as the first flat pipe through holes (31), and each first flat pipe through hole (31) and one third flat pipe through hole (33) are arranged in parallel along the width direction of the flat pipe hole; the third branch pipe (8) is provided with third flat pipe jacks (81) which are coaxially corresponding to the third flat pipe via holes (33) in position and equal in number, and the third branch pipe (8) is located in a closed structure formed by combining the second fluid chamber (2) and the main plate (3) and used for distributing and collecting the second fluid and keeps a distance from the main plate (3) in parallel.

6. A flat tube heat exchanger, comprising a current divider and a first flat tube (5), wherein the current divider is the multi-medium current dividing and collecting structure of claim 1; the first flat pipe (5) comprises a first runner group and a second runner group, runners are arranged at intervals, runner ports (51) of the first runner group and runner ports (52) of the second runner group are arranged on the heat exchange surface at the end part of the first flat pipe (5), and the runner ports (52) of the second runner group are positioned on the inner side of the runner ports (51) of the first runner group; the end part of the first flat pipe (5) penetrates through the first flat pipe through hole (31) and the first flat pipe jack (11) and is inserted into the inner cavity of the first branch pipe (1), the first flow channel group flow channel opening (51) is positioned in the inner cavity of the first branch pipe (1), and the first flow channel group is communicated with the first branch pipe (1) to form a first heat exchange channel; and a second flow channel group flow channel opening (52) is positioned in the distance between the first branch flow pipe (1) and the main plate (3), and the second flow channel group is communicated with the closed cavity for the second fluid branch flow to form a second heat exchange channel.

7. A flat tube heat exchanger comprises a diversity current device, a first flat tube (5) and a second flat tube (6), and is characterized in that the diversity current device is the multi-medium diversity current structure of claim 2; the first flat pipe (5) comprises a first runner group and a second runner group, runners are arranged at intervals, a runner port (51) of the first runner group and a runner port (52) of the second runner group are arranged on a heat exchange surface at the end part of the first flat pipe, and the runner port (52) of the second runner group is positioned at the inner side of the runner port (51) of the first runner group; the end part of the first flat pipe (5) penetrates through the first flat pipe through hole (71), the first flat pipe through hole (31) and the first flat pipe insertion hole (11) to be inserted into the inner cavity of the first branch pipe (1), the first flow channel group flow channel opening (51) is positioned in the inner cavity of the first branch pipe (1), and the first flow channel group of the first flat pipe (5) is communicated with the first branch pipe (1) to form a first heat exchange channel; a second flow channel group flow channel opening (52) is positioned in the distance between the first branch flow channel (1) and the main plate (3), and the second flow channel group is communicated with the closed cavity for the second fluid branch flow to form a second heat exchange channel; the end part of the second flat pipe (6) penetrates through a second flat pipe inserting hole (72), a second flat pipe runner port (60) is positioned in an inner cavity of the third fluid chamber (7), and a runner of the second flat pipe (6) is communicated with a closed cavity for separately collecting and distributing the third fluid to form a third heat exchange channel.

8. A flat tube heat exchanger comprises a diversity current device, a first flat tube (5) and a second flat tube (6), and is characterized in that the diversity current device is the multi-medium diversity current structure of claim 3 or 4, and the end faces of the two ends of the first flat tube (5) and the second flat tube (6) are provided with a runner port; the end part of the first flat pipe (5) penetrates through the first flat pipe through hole (31) and the first flat pipe insertion hole (11) and is inserted into the inner cavity of the first branch pipe (1), and a flow channel of the first flat pipe (5) is communicated with the first branch pipe (1) to form a first heat exchange channel; the end part of the second flat pipe (6) is inserted into the second flat pipe insertion hole (32), a runner port on the end surface of the second flat pipe (6) is positioned in the space between the first branch pipe (1) and the main board (3), and a runner of the second flat pipe (6) is communicated with the second fluid chamber (2) through the space to form a second heat exchange channel.

9. A flat tube heat exchanger comprises a diversity current collector, a first flat tube (5), a second flat tube (6) and a third flat tube (9), and is characterized in that the diversity current collector is the multi-medium diversity current collecting structure of claim 5, and flow channel ports are arranged on the end faces of the two ends of the first flat tube (5), the second flat tube (6) and the third flat tube (9); the end part of the first flat pipe (5) penetrates through the first flat pipe through hole (31) and the first flat pipe insertion hole (11) and is inserted into the inner cavity of the first branch pipe (1), and a flow channel of the first flat pipe (5) is communicated with the first branch pipe (1) to form a first heat exchange channel; the end part of the second flat pipe (6) is inserted into the second flat pipe insertion hole (32), a runner port on the end surface of the second flat pipe (6) is positioned in the space between the first branch pipe (1) and the main board (3), and a runner of the second flat pipe (6) is communicated with the closed cavity for the second fluid distribution flow to form a second heat exchange channel; the end part of the third flat pipe (9) penetrates through the third flat pipe via hole (33) and the third flat pipe jack (81) and is inserted into the inner cavity of the third branch pipe (8), and a flow channel of the third flat pipe (9) is communicated with the third branch pipe (8) to form a third heat exchange channel.